This DAC has differential outputs. The full scale output is specified as 3.2Vpp. The bipolar zero voltage is specified as 1.4V. Questions: Is there a common mode voltage on the high and low outputs? Does the high output swing above and below the low output, or is it unipolar? Asking another way, what are the absolute voltages (referenced to ground) of the high and low output at zero scale and at full scale?